Please help! Kidney stones? Cancer? Failure?

I am freaking out!!! For the past few days I've have what looks like fish food flakes in my urine, dark HUGE flakes literally look like fish food that's the only way I can describe it.... Are these kidney stones, failure, cancer, nothing? Surely this is not normal, imagine fish food how it looks in water that's what's in my urine?!?! Has anyone ever experienced this? Please help Tweet